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vishwa sharma Grade: 11
        

                                                                      sinx+sin2x=2


                                                       find,cos4x+cos2x

6 years ago

Answers : (1)

Jayesh Arun Kadam
34 Points
										









 sinx+sin2x=2




is only possible when x is element of (4n+1)∏/2 (n E R)


At all this points cosx =0










cos4x+cos2x=0



6 years ago
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